The document provides information about purchasing systems and processes. It defines a purchasing system, describes key functions and types of purchasing methods. These include tender systems, blanket orders, e-purchasing, subcontracting, rate contracts, petty cash systems, imports and more. It also outlines the advantages and disadvantages of various methods. The document gives details on concepts like tenders, blanket orders, subcontracting, capital equipment purchase and imports. It provides best practices for maintaining accountability, authorization, separation of duties, security of assets, review and reconciliation in purchasing. Finally, it outlines an audit plan to ensure purchasing policies and procedures are followed.